looking for active rfid module..

I already know about the passive rfid module that we use a cart or key-chine as a tag to transmit data to the receiver.

what I'm looking for is an active rfid module to be used with arduino..

I want to use it as access control..

thank you guys..

It is only the tag that is different the module or reader is exactly the same. So it is the active tags you have to search for. And it has to be compatible with your reader.

What does an active tag do as compared to a passive one?

Does it have batteries ?

Im confused.

Edit

Scrub that.

Brain fade.

Grumpy_Mike.. you mean I can read the modern car-keys with the RFID-RC522 ?

Boardburner2.. yes, the active RFID tags have batteries ..

I'm talking about the technology used in an application like the key-less access control..

here is an example.. https://www.youtube.com/watch?v=GqNoAGLWqXU

engr_aziz: Grumpy_Mike.. you mean I can read the modern car-keys with the

No.

Frequency and operation are different.

Often keelock process is used for that and the manufacturers reciever is needed.

You can buy. Keelock chips but without knowing the manufacturers encryption code they will not work

Keeloq

Boardburner2:
No.

Frequency and operation are different.

Often keelock process is used for that and the manufacturers reciever is needed.

You can buy. Keelock chips but without knowing the manufacturers encryption code they will not work

Keeloq

Do I understand that there is not module for that ?

Microchip used to make a keeloq shield which came with a transmitter fob.

There are various remote shields for arduino, ones for rf always come with matching tx and rx.

These do not always have rolling codes like the automotive ones and are less secure.

https://www.adafruit.com/products/1095

This is a secure one https://www.quasarelectronics.co.uk/Item/8157-2-channel-high-current-rf-remote-control-relay-board-set

These can be used to roll your own depending on your skillset.

http://uk.farnell.com/rf-solutions/rf600d/ic-decoder-keeloq-dip18/dp/1200973

Engr-aziz.

Please do not put technical information in pm , post here so all can see it.

From your message it does appear that you need an rfid active transponder.

I am not that familiar with those, the ones i have used were expensive custom jobs.

Start a new thread using the link you gave in the pm.

A pair of these modules should work.

https://www.openimpulse.com/blog/wp-content/uploads/wpsc/downloadables/nRF24L01_RF_Transceiver_Datasheet.pdf

However its not an off the shelf solution.

The tag part will have to be engineered to keep the consumption down so the battery lasts.

It may talk to an offthe shelf tag if you can get one but these systems are normally sold as paired units